Wasps seen piercing the mouth or other parts of tree frogs with their sharp weapon when being attack ed. From The Guardian Magazine, Nicola Davis Science correspondent, Edited by Amal Udawatta, Tree frog spits out a male mason wasp after prick from its genitalia spikes Kipling might well have believed that the female of the species is more deadly than the male, but when it comes to mason wasps, the latter have quite the weapon. Researchers in Japan have discovered that male mason wasps use sharp spines on their genitalia to resist being swallowed by predators. The team made their discovery by housing 17 tree frogs with 17 male mason wasps. While all of the frogs attacked the wasps, just over a third ultimately rejected the insects. “Male wasps were frequently observed to pierce the mouth or other parts of frogs with their genitalia while being attacked,”...